Questions on UI for ASP.NET AJAX Forum

43 answers

8.9K+ views

This sticky thread lists known issues and breaking changes introduced in the UI for ASP.NET AJAX releases.

Q3 2011 (Version number: 2011.3.1115)

Problem: When adding items to OData-enabled controls (RadMenu, RadTreeView, RadListBox, RadComboBox) through design time erroneous markup is applied to the control:

<telerik:RadListBox runat="server" ID="RadListBox1">
    <Items>
    </Items>
    <WebServiceSettings>
        <ODataSettings InitialContainerName="">
        </ODataSettings>
    </WebServiceSettings>
</telerik:RadListBox>

Please note the added ODataSettings section. It will cause JavaScript errors on the page.

Solution: Remove the ODataSetting section and the issue will vanish. The problem is also fixed in the Q3 SP1 release, version number 2011.3.1305

General Discussions

updated answer on 29 May 2025

1 answer

756 views

I'm getting an error with Telerik

When I run my project I'm getting this error

Could not load file or assembly 'Telerik.Web.UI' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

In my web.config I checked that the version in the web.config is the same as the version I'm using in references

General Discussions

answered on 22 Oct 2021

1 answer

10 views

Start and enddate inputs

Hi,

How can we display the input boxes for start- and enddate dates vertically instead of horizontally?

Marc

DateRangePicker

answered on 24 Jul 2025

1 answer

265 views

'Sys' is undefined error (fiddler 404 on Telerik.Web.UI.WebResource.axd)

We are having an issue deploying to our user acceptance test and production environments, the telerik webresource.axd file is getting a 404 there, causing the infamous 'Sys' is undefined error I presume. The application works fine on the programmers development web server. The developers app pool is set up as Framework 4.0 Integrated pipeline Windows 7, the test and production environments we deploy to are also set up as Framework 4.0 Integrated pipeline, Windows 2008. We have had our server admin verify that the axd handler mappings are enabled. Additionally I have read all the threads concerning this error and have tried everything, to no avail. Pasted below are the system.web and system.webserver sections of our config file, we have included the telerik webresource axd handler, and it is recognized because if we remove it we get a telerik exception to go add it. The crux of the problem appers to be why we are getting a 404 on this axd. The site is accessed via IBM TAM (Tivoli Access Manager) in the deployment environments, if that makes any difference. Our telerik menus remder however they dont fly out due to not having their axd resources, I presume, so it appears like the telerik dll is getting loaded, telerik tags are recognized. We are deploying the telerik dll's in the /bin (not the GAC). Also pated below is the fiddler log of our default.aspx page loading, note the telerik axd file gets 404.

I tried a small experiment, I created a dummy test.axd text file and browset it from my development machine IIS, I got a 404.17 error "The requested content appears to be script and will not be served by the static file handler".

Then I copied the same file to our deployment server site root and browsed it. Instead of getting a 404.17 error I got a flat out 404 error saying that the resource could not be found.

There is definitly a diference in how the developer box and the deployment boxes are configured, does anyone have an idea.

We are desperate, and fully licensed for this product, we have a user community of 80,000 people waiting for us to deploy this release. So far the only thing holding it back is this problem. I would appreciate any help, we've exhausted everything we could find.

General Discussions

updated question on 23 Jul 2025

29 answers

614 views

RadGrid - Edit picks wrong record

I have a grid full of data, and the data behind is is frequently changing.

When the user picks a row to edit and clicks the edit button, it seems that the grid says "Edit the 5th item in the grid". Of course, during the AJAX postback, the grid loads completely different data, and the record they want to edit is now the 9th item.

Is there any way to have the grid say "Edit item with a key value of 34832" instead of being positional? The only other solution I've come up with is to cache the grid data in session, and if the grid gets an edit command, reload from the cache instead of the database. I'm going to go try to implement that now.

Grid

answered on 23 Jul 2025

1 answer

14 views

License Key Activation: will our current activation method still work when upgrading to Telerik UI for ASP.NET AJAX 2025.2.609?

Hi, currently we are activating our Telerik UI for ASP.NET AJAX license in our upper environments via the steps under "GitHub Actions" on this page: https://www.telerik.com/products/aspnet-ajax/documentation/licensing/add-license-to-ci-cd

We're working on upgrading to the latest 2025.2.609 package and I wanted to check if this will require any changes on our side with how we're handling the license activation in our upper/production environments. Thanks.

Licensing

answered on 21 Jul 2025

1 answer

11 views

Radeditor Bad Escaped Character

In our online application using the Radeditor I includetext like: "the 17^th"

I get the following error:

Uncaught SyntaxError: Bad escaped character in JSON at position 986 (line 1 column 987)
 at JSON.parse (<anonymous>)
 at Telerik.Web.UI.SpellCheckService._processResponse ()
 at Array.<anonymous> ()
 at  at Sys.Net.WebRequest.completed ()
 at XMLHttpRequest._onReadyStateChange ()

The editor then locks up and I cannot continue.

This does not happen in the online demo.

Any ideas?

Editor

Input

Spell

updated answer on 21 Jul 2025

1 answer

69 views

Upload file that contains cyrillic letters

Hi,

Is it possible to upload file to cloud that contains cyrillic letters (test_кириллица.csv) using RadCloudUpload control?

Thanks!

CloudUpload

answered on 18 Jul 2025

1 answer

8 views

Issue regarding Telerik table classic render mode

Hi, I am facing the following issues with the Telerik table. Can you please help resolve them?

1. The text is not aligned with the dropdown (Image attached)

2. When we edit the widget > click on the table on a random cell > select Table Properties > The table wizard will always default to the top left cell > This is working as expected.
If you click in the table (not the editor) and select Cell Properties > the wizard will display (highlight) the cell you selected in the table is it expected that when selecting table properties it always default to the left side first box but when selecting cell properties it will show the current cell which we are in.

video link:- https://jam.dev/c/c1cdf56c-53ab-4218-8774-65907b3efd6d

3. Table properties > Select cells (e.g the top three) > Border > Select the bottom > 6 PX > Purple > OK > The preview is not showing the changes we want to apply > the preview is showing only the top left cell

video link:- https://jam.dev/c/88c17904-c758-47ab-949c-d29b4775dc6d

4. Following step 3 > when we navigate the mouse up and down, in the background, we can see only the top left cell with the border we configured. (while initially we selected the top three) > But if now, in the preview page, we will choose the top three > OK >We will see the top three cells showing the design we configured.

video link:- https://jam.dev/c/ba52bff1-7459-44d6-a647-d3eb5cea07f3

5. From the widget/page > select the middle bottom cell (notice it has no styling) > Table properties > Cell Properties > Select the middle bottom cell again > More Cell Styling > Border > Notice that the top row design is inherited > Is this expected?

video link:- https://jam.dev/c/1516e16f-1f7c-4e89-8b19-368edabf5703

5.1 I have observed that when we're in the widget > selecting a cell from the table > clicking on Cell Properties > The top row design is not inherited.

Editor

Grid

ImageEditor

answered on 16 Jul 2025

1 answer

11 views

Issue regarding Telerik table classic render mode

Hi, I am facing the following issues with the Telerik table. Can you please help resolve them?

1. The text is not aligned with the dropdown (Image attached)

2. When we edit the widget > click on the table on a random cell > select Table Properties > The table wizard will always default to the top left cell > This is working as expected.
If you click in the table (not the editor) and select Cell Properties > the wizard will display (highlight) the cell you selected in the table is it expected that when selecting table properties it always default to the left side first box but when selecting cell properties it will show the current cell which we are in.

video link:- https://jam.dev/c/c1cdf56c-53ab-4218-8774-65907b3efd6d

3. Table properties > Select cells (e.g the top three) > Border > Select the bottom > 6 PX > Purple > OK > The preview is not showing the changes we want to apply > the preview is showing only the top left cell

video link:- https://jam.dev/c/88c17904-c758-47ab-949c-d29b4775dc6d

4. Following step 3 > when we navigate the mouse up and down, in the background, we can see only the top left cell with the border we configured. (while initially we selected the top three) > But if now, in the preview page, we will choose the top three > OK >We will see the top three cells showing the design we configured.

video link:- https://jam.dev/c/ba52bff1-7459-44d6-a647-d3eb5cea07f3

5. From the widget/page > select the middle bottom cell (notice it has no styling) > Table properties > Cell Properties > Select the middle bottom cell again > More Cell Styling > Border > Notice that the top row design is inherited > Is this expected?

video link:- https://jam.dev/c/1516e16f-1f7c-4e89-8b19-368edabf5703

5.1 I have observed that when we're in the widget > selecting a cell from the table > clicking on Cell Properties > The top row design is not inherited.

Editor

answered on 16 Jul 2025